METHOD OF PREPARING OF HEAT EXPANDED GRAPHITE Russian patent published in 1995 - IPC

Abstract SU 1828065 A1

FIELD: inorganic chemistry. SUBSTANCE: method of preparing of heat expanded graphite from dispersed iron-graphite-containing waste of metallurgic production involves oxidative treatment of waste with concentrated sulfuric acid and potassium bichromate following by separation of solid product from solution, its drying and heat treatment at 600-1000 C. In order to confer magnetic properties and retain high conductivity and low volume weight to the end product the waste indicated above is taken with iron content 10-60 wt.-%. Oxidative treatment is carried out for 2-10 min. EFFECT: improved method of heat expanded graphite preparing. 2 cl, 1 tbl

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SU 1 828 065 A1

Authors

Maslov V.A.

Pustovalov Ju.P.

Makeev V.Eh.

Dates

1995-04-30Published

1988-06-27Filed